http://stats.oecd.org/OECDregionalstatistics/
http://stats.oecd.org/OECDregionalstatistics/

takes time to load.... but versatile views

click and roll over for pop stats of any region in the world

International comparisons of economies and societies tend to be undertaken at the country level; statistics refer to gross national product, for example, while health and education levels tend similarly to be measured and debated in national terms. However, economic performance and social indicators can vary within countries every bit as much as they do between countries. Understanding the differences and similarities in regional economic structures is essential for designing effective strategies which improve regional competitiveness and in turn increase sustainable national growth. Regions in OECD countries are classified on two territorial levels to facilitate greater comparability of regions at the same territorial level. The higher level (TL2) consists of 335 large regions. All the regions are defined within national borders and in most of the cases correspond to administrative regions.

Interesting site which allows manipulation and animation of set data. Bears further investigation.